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Title:
CHROMIUM ELECTROPLATING BATH
Document Type and Number:
Japanese Patent JPS5887289
Kind Code:
A
Abstract:
A chromium electroplating electrolyte containing a source of trivalent chromium ions, a complexant, a buffer agent and a sulphur species having S-O or S-S bonds for promoting chromium deposition, the complexant being selected so that the stability constant K1 of the chromium complex as defined herein is in the range 10<6> < K1 < 10<1><2> M<-><1> and the sulphur species being selected from thiosulphates, thionates, polythionates and sulfoxylates. Complexants within this range include aspartic acid, iminodiacetic acid, nitrilotriacetic acid, 5-sulphosalicylic acid or citric acid.

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Inventors:
DONARUDO JIYON BAAKUREI
JIEEMUZU MAIKERU BUIGAA
UIRIAMU MOORISU MOOGAN
Application Number:
JP15972882A
Publication Date:
May 25, 1983
Filing Date:
September 16, 1982
Export Citation:
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Assignee:
IBM
International Classes:
C25D3/06; C25D3/10; C25D3/56; (IPC1-7): C25D3/06
Attorney, Agent or Firm:
Next student Okada



 
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